package com.itheima.filter;

import com.alibaba.fastjson.JSON;
import com.itheima.common.R;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
//拦截器
//@Component
public class LoginCheckInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
         Long along= (Long) request.getSession().getAttribute("employee");

         if (along == null){
             response.getWriter().write(JSON.toJSONString(R.error("NOTLOGIN")));
             return false;
         }
        return  true;
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {

    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
    }
}
